Machine for manufacturing plate-glass



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N. M. MILLER. MACHINE POR MANUFAGTURNG PLATE GLASS.

atented Jan. 1, 1895.

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N. M. MILLER. MACHINE EOE MANUFACTURING PLATE GLASS.

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N. IVI. MILLER. MACHINE FOR MANUFACTURING PLATE GLASS.

No. 53L732. Patented Jan. l, 1895.

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7 Sheets-Sheet 4. N. M. MILLER. MACHINE FOR MANUEAGTURING FLATE GLASS.No. 531,652.

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N. M. MILLER. MAGHINB FOR MANUFACTURING PLATE GLASS.

No. 531,732. PAAB'AAAA JAA. 1, 1895l 'I 1| *s l n n o a o n o n a o o o0 o o o o/L n o ,l r ll Q' l i n n o a a a n c a n a u o o a o o a o e cil l Il D o o c c o o a c a o a o5 a n c: o a e o l i i' O a o o o o o oo c u u o o v o o o n c n l! (No Model.) I 7 Sheets- Sheet 6.

N. M. MILLBR MAGHINE FR MANUFACTURING PLATE GLASS.

No. 531,732. P-atentedvan. 1, 1895.

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N. M. MILLER. MACHINE EUR MANUFACTURING PLATE GLASS. No. 531,732.Patented Jan* 1, 1895.

A @uvam/Eo@ @50i/kwamen v @L7M 47?# UNrTED STATES PATENT @Trient NILESM. MILLER, OF PHILADELPHIA, PENNSYLVANA.

MACHINE FOR MANUFACTURING PLATE-GLASS.

SPECIFICATION forming part of Letters Patent No. 531,732' dated January1, 1895.

Application filed August l5, 1893 Serial No. 483,211. (No model.)

To a/ZZ whom if; may concern:

Be it known that I, NILEs M. MILLER, of Philadelphia, in the county ofPhiladelphia and State of Pennsylvania, have invented certain new anduseful Improvements in Machines for Manufacturing Plate-Glass; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appcrtains to make and use the same.

My invention relates to an improvement in'/ machines for the manufactureof plate and sheet glass,the object of the invention be# ing to soconstruct a machine for the purpose stated that the plates of glassproduced thereby shall possess great density, clearuess and smoothness.

A further object is to produce an apparatus whereby glass can besuccessively rolled and pressed.

A further object is to provide simple and efcieut means for feeding themolten glass to the machine.

Afurther object is to produce simple means whereby to eject the glassplate after it has been rolled and pressed, from the apparatus into anannealing furnace.

A further object is to so construct the apparatus that a roller is madeto pass over the glass; the plate then clamped between two ta bles andpressure then applied to said plate.

A further object is to provide simple devices whereby to cause theroller to automatically rise after it shall have passed over the glass,and become automatically locked in its elevated position, and also toprovide means for automatically releasing said roller when it returns.to the starting point.

A further object is to construct an apparatus for the manufacture ofplate and sheet glass, in such a manner as to compensate for theexpansion of the table due to heat iin- 1 parted thereto by the moltenglass.

A further object is to produce an apparatus for the manufacture of glassplate, which shall be comparatively simple in construction and effectualin the performance of its functions.

With these objects in view the invention consists in the combinationwith a frame, and a table, of a carriage or traveling frame carrying aroller and a table, and means for applying pressure, whereby to press aplate or sheet of glass between said tables.

The invention also consists in the combination with mechanism forproducing a plate of glass, of means for ejecting the plate of glassfrom the machine into an annealing oven.

The invention also consists inthe combination with an apparatus forproducing plate and sheet glass, of means for feeding the molten glassthereto.

The invention also consists in the method of producing plate glass,consisting in successively rolling and pressing the glass.

The invention also consists in the method of producing plate glass,consisting in first passing a roller over the glass, and then subjectingthe glass to pressure between tables.

The invention also consists in certain novel features of constructionand combinations and arrangements of parts as hereinafter set forth andpointed out in the claims.

In the accompanying drawings: Figure l is a side view of the machinepartly broken away. Fig. 2 is a bottom plan view illustrating themeansfcr applying power to the apparatus. Fig. 3 is an end View. Fig. 4is a side view of a portion of the apparatus, showing the lower tableand adjacent parts. Fig. 5 is an enlarged view of a portion of the endof the lower table and framework, showing also means for compensatingfor the expansion of said table. Fig. 6 is an enlarged view of a portionof the lower table showing one of the perforations therein. Fig. 7 is aplan view of the lower table and a portion of the framework. Fig. 8 is aview illustrating the mechanism for ejecting a plate of glass from themachine into the annealing furnace. Fig; 9 is a view of the ejectingmechanism. 10 is a detail view ot' the devices for feeding the moltenglass to the lower table.

A represents a main frame, in which shafts or axles a are mounted, saidshafts or axles Fig.A

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carrying wheels a' adapted to run on tracks a2, which latter are locatedin front of the anhealing furnaces. (Not shown.)

The sides of the main frame A are made with L-shaped grooves or ways a3for the accommodation of similarly shaped lianges or guides 0.4projecting from a movable or sliding frame or carriage B.r

Located on the frame A is a series of hydraulic cylinders a5, on theplunger-s a of which a lower table O is located. The table C ispreferably made in sections, the framework comprising bars a7 havingdovetailed grooves or recesses as for the reception of f dove-tailedbars a9 disposed at right angles to thefbars a7- The bars a9 areprovided with dove-tailed tenons am adapted to enter dove-r tailedgrooves a in plates b, which constitute the face of said table C. Fromthis con struction and arrangement of parts it will be seen that thetable C is expansible in both directions. In order to prevent thecollection of air between the face of the plates Z9 f and the glassthereon, which would tend to cause the under surface of the glass to beroughened, said plates are made with a nurnber of minute perforationscl2 for the escape of air, said perforations preferably communicatingwith chambers 0.13 made in said plates.

Located at the longitudinal edges of the frame A are brackets C',L-shaped in cross section, their depending portions b being disposedbetween the sides ofthe movable table C and the frame A and thehorizontal portions ofy said brackets being located on top of the sidebars of the frame A. The upright portions of the frame A and thedepending portions b of the brackets C are made with aligned sockets forthe reception of pins b2 and on said pins and between the frame A andbrackets C', springs b3 are located, whereby to maintain said bracketssnugly against the table and still permit the expansion of said table.The brackets C are fastened to the frame A and held in proper positionby means of bolts b4. The upper faces 'of the brackets G are, as shownin Figs. 4 and 5, normally disposed somewhat above the face of the tableC, the thickness of the proposed plate of glass being determined by thedistance between the upper faces of the table C and the brackets C. Atthe ends of the table C, are brackets C2, identical with those abovedescribed, said brackets C being disposed between the brackets C2, asshown in Fig. 7.

Mounted in sliding bearings c carried by the movable frame or carriage Bin proximity to one end thereof, is a roller D. The roller D is retainedin proper position relatively to the table C and moved'to or from saidtable (for adjustment), by means of a crank shaft c', on which a pinionc2 is secured, said pinion meshing with a pinion c3 on one end of ascrew c4,

4the upper end of which is adapted to enter the journal box of theroller D. There may be two sets of these devices, one for each journalyweighted dog d8 pivoted to the hopper.

yhave a vertical movement therein.

box of the roller D. An arm or bracket d projects from the forward endof the frame or carriage B, and through it screw threaded crank shafts dpass, whereby to yadjust a hopper d2 carried by said shafts relativelyto the table'C. The outletof the hopper is provided with a hinged yhoodor gate d3 adapted to normally close said opening. A shaft d4 is mountedin suitable bearings on the hopper d2 and carries a hand wheel A chaind6 is secured at one end to the hood or gate (Z3 and at its other end isadapted to be woundy on the shaft d4. Thus it will be seen that byoperating ythe hand wheel d5 the hood or gate d3 can be operated to openor close the outlet of the hopper. In order to retain the hood or gatecl3 in the position in which it shall be set, a ratchet wheel (Z7 issecured to they shaft d" and is adapted to be engaged by a pivoted Thepurpose of the hopper d2 is to contain molten glass and discharge thesame on the table C .immediately in front of the roller D, when theframe or carriage B is moved in themanner hereinafter yexplained,thethickness of the plate to'be produced being gagedby the relativeposition of the free edge of the hood to the outlet of the hopper. Inorder to compel the molten glass tor flowr from the hopper d2 regularlyand thus be spread on the table in uniform thickness, the devices now tobe explained will be employed. rA plunger dg is located within thehopper d2 and adapted to To this plunger, screws d10 are attached and onsaid screws, pinions du are located and adapted to receive motion frompinions CP2 carried by a shaft d. At one end the shaft (Z13 carries agear d which receives motion from a gear dw on a shaft (11G, carryinganother gear d meshing with a gear cZlS on a shaft ll,to which lattermotion is imparted in a manner presently explained. From thisconstruction, it will be seen that as the carriage B moves forward, themolten glass will be positively forced through the hopper and will bedeposited on the table in uniform quantities.

Mounted on the main frame A is a motor E (preferably an electric motor),ou the shafte of which, a bevel gear lis mounted and is adapted to bemade to rotate with said shaft by means of a clutch e. Another gearwheel 2 is mounted on the shaft e and is adapted to be made to rotatetherewith by means of a clutch e2. The clutches e and e2 are operatedlIO through the medium of pivoted levers e3, e, j

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main shaft e, in a sense, alternately, and for this reason, both pivotedlevers e3 and e4 are pivotally connected to the same operating lever e5,a movement of which in one direction will throw the carriage andoperating mechanism into motion, and a movement of said lever e5 in theother direction will cause the entire apparatus to move on the tracksa2. A shaft 3 is mounted in the main frame A and at one end carries abevel et adapted to receive motion from the gear l. At or near the otherend of the shaft 3, a gear wheel 5 is secured and is adapted to impartmotion to a gear wheel 6 secured on the shaft or axle a, thus propellingthe apparatus. In proximity to the motorshaft e, a shaft 7 is mounted inthe frame A and at a point between its ends, carries a gear wheel 8,adapted to reeeive motion from the gear wheel 2 on the main shaft e. Atthe end of the shaft 7, gears 9, Q, are secured and adapted to mesh withrack bars 10 on the bottom of the movable frame or carriage. A verticalshaft ll is mounted in the frame or carriage B and carries a pinion 12adapted to receive motion from a rack bar 13 secured to the main frameA, as the carriage moves along. The shaft ll carries a bevel gear 14adapted to impart motion to a gear 15 carried by the roller D. Thusitwill be seen that as the carriage B moves along, the roller D will bepositively rotated and made to effectually roll the glass, which, at thesame time, is being deposited on the table O by the hopper d2,immediately in front of the roller.

I prefer to provide a duplicate of the means above described forrotating the roller D, at the other end thereof.

For reasons which will appear farther on in this description, it isnecessary that the roller D shall be raised off the glass after havingpassed over it to roll it, and for the accomplishment of this, inclinedblocks f are pivotally connected to the main frame A at or near the endof the table C. Two of these blocks will be employed, one at each sideof the machine, but as they andthe devices connected to them areduplicates, a detail description of one will suffice for both. At thefree end of the block f, a vertical rod f is pivoted, and to the lowerend of the rod f', one end of a lever f2 is pivoted. The lever f2 ispivotally supported at a point between its ends in a groove or recess inthe main frame A and at its free end carries a roller f3, the peripheryof which projects to the groove or way a3. The blocksf are normallydepressed so as to permit the mechanism for ejecting the rolled andpressed glass plate, to pass over them, but wh en the roller D reachesthe blocks fat the end of its forward movement, it will ride on saidblocks and thus be raised olf or above the glass over which it has justpassed, the blocks being held rigid in their elevated positions by theflanges or guides a of the carriage B, which will have become disposedover the rollers f3, thus preventing any movement of the rods andleversconnected With said blocks f. 'Vhen the carriage B is moved back, theflanges or guides a4 will move off of the rollers f3 and thus releasethe blocksf, but it is not desired that the roller shall thereby beallowed to again make con` tact with the glass over which it has alreadypassed and therefore the devices now to be described will be employedfor retaining the roller in its elevated position. Sliding bars g arelocated on the carriage B adjacent to the journals of the roller D andare impelled toward said journals by means of springs g. Then thecarriage B reaches the forward end of its movement and the roller Drides up on the blocks f, the bars g will be forced under the journalsofthe roller D and thus maintain it elevated until the carriage reachesits normal or starting position, when a pivoted lever g2 projectingdownwardly from the bar g will engage a pin g3 projecting from the mainframe A, and thus cause the bar g to be withdrawn and release the rollerD, allowing it to rest on incline g4 at the starting point. (See dottedline, Fig. l.)

Carried by the movable frame or carriage B is avertically movable tableF having face plates similar to those of the table C, said plates beingprovided with minute perforations, the same as the face plates of thetable C. The table F is provided with a series of guide bars h adaptedto pass loosely through perforations made in a har or bars h' secured tothe frame or carriage B. Screws li" are passed through threadedperforations in the table F and the bars 7L' and are adapted to causesaid table to have a vertical movement in the manner presentlyexplained. rlhe screws are provided at their upper ends with bevel gears16 adapted to receive motion from similar gears 17 carried by a shaft 18mounted in the frame or carriage B. At one end of the shaft lS agearwheel 19 is secured and receives motion from a gear Wheel 2O mountedon a journal 2l projecting from the carriage B. The gear Wheel 2Oreceives motion from a gear Wheel 22 carried by the oarriage B. A shaft23 is mounted in the main frame A in proximity to one end, and carries agear Wheel 2l adapted to receive motion from a gear wheel 25 carried bythe main shaft e. On the shaft 23 a bevel gear 2G is loosely mounted andadapted to be made to rotate with said shaft by means of a clutch 27,which is manipulated bya lever 28. The gear wheel 26 is adapted totransmit motion to a bevel gear 29 secured to a short shaft 30.

Now when the carriage B shall have moved forward to the end of itsmovement, and the roller D carried by said carriage shall have rolledthe glass on the table C, the upper table F will be direetlyover theplate of glass on the lower table C, and the short shaft 30 will enteran angular opening in the gear Wheel 22. Should the clutch 27 be nowoperated to lock the gear 2G to the shaft 23, motion will be imparted tothe screws F', through IIC the medium of the intermediate gearing, andthe upper table will thus be made to descend yupon the glass on thelower table C. When the parts are in these positions, the hydrauliccylinders a5 will be charged with water through pipes t', by means of apump G. Thus it will be seen that `the plate of glass, after having beenrolled as above explained, will be subjected to great pressure betweenthe tables O and F, thereby rendering said plate of glass compact,smooth and clear.

The pump Gr is driven by a gear wheel 31, which is connected with theplunger of said pump. The gear Wheel 31 receives motion from a gearwheel 32 mounted loosely on the shaft 23. The gear wheel 32 is adaptedto be made to rotate with the shaft 23 by means of the clutch 27, whichis operated by means of a lever 28.

At the forward end of the main frame A a carriage H, is located andprovided with flanges or guides j adapted to run in the grooves asin themain frame A. The carriage H is made with an arm j respectively at bothsides, from which a pin jz projects, and with this pin the hooked end ofan arm j3, pivotcd to the carriage B, is adapted to engage when thelatter reaches the forward end of its movement, so that when thecarriageB moves back to its normal position, the carriage H will moveback with it for a purpose which will be fully explained farther on.

Mounted in the main frame A and extending to a point in proximity totheforward end thereof, is a shaft 35, having a groove 36 running its fulllength or approximately its full length. The shaft 35 is provided at oneend with a bevel gear 37 adapted to receive motion from a bevel gear 37aon the end of the main motor shaft e. On the shaft 35, two bevel gearwheels 33, 38, are loosely mounted and between these gears, a clutch 39is located and adapted to be operated by means of a lever 40, whereby tolock either of said gears to the shaft 35. This clutch is provided witha spline adapted to enter the groove 36 whereby it is rotated with shaft35, but is free to slide thereon. A vertical shaft 41 is mounted in thecarriage H and at its lower end carries a bevel gear 42 adapted to meshwith the gears 38, 3.3. At the upper end of the shaft 41, a bevel gear43 is located and adapted to mesh with a bevel gear 44 on a horizontalshaft 45 mounted in the carriage H. On the other end of the horizontalshaft 45 a bevel gear 46 is secured and adapted to mesh with a bevelgear 47 at the upper end of another vertical shaft 41 mounted in thecarriage H. On each vertical shaft 4l, 41a, a gear wheel 48 is securedand adapted to mesh with the rack bars 13 carried by the main frame A.From this construction and arrangement of parts it will be seen thatwhen the vertical shafts 4l, 41 are rotated, the carriage H will bemoved according to the direction of rotation of said shafts which willbe governed by means of the clutch 39. Two

bevel gears 49, 49, are also mounted loosely on the shaft 35 and betweenthem a clutch 50 is located, said clutch being adapted to be opcrated bymeans of a lever 51. A vertical shaft 52 is mounted in the carriage Hand at its lower end is provided with a bevel gear wheel 53 adapted tomesh with the bevel gears 49, 49. A bevel gear 54 is secured at. theupper end of the vertical shaft 52 and meshes with a bevel gear at oneend of ashaft 55 having a double screw thread. Mounted on the doublescrew threaded shaft 55. are nuts 56 having arms 57, and pivotallyconnected to said nuts is a frame 5S in the form of lazy' tongs, havinga horizontal slotted bar 59 at its forward end. 'The lazy-tong frame 5Sis maintained in a normally inoperative position by means of a cam 60adapted to engage the arms 57 of the nuts 56, said cam being carried bya shaft G1, having a wheel 62 by means of which to operate it.

From the forward end of the main frame A, an arm lo projects (one oneach side) and to these arms a table I is pivotally connected, thenormal position of said table being that shown in dotted lines in Fig.l, when in use.

When the carriages B and H are moved backwardly, as above explained, anarm Zpro jecting downwardly from the hookshaped arm L7'3 will engage apin m, when the carriage B reaches the rearward extremity of itsmovement, thereby disengaging the carriage H from the carriage B. Theapparatus will be run on the tracks a2 until it is directly in front ofthe door of an annealing furnace, when the table I will be turned downand made to enter the oven and thus eonstitutea way or slide wherebytofacilitate the insertionof the glass plate into the furnace. The shafts41 will now be put into operation by means of the clutch 39, as aboveexplained. The carriage H will thereby be made t0 move forward, thelazy-tong frame pushing the rolled and pressed glass plate (which hadbeen previously raised by the hydraulic devices) before it. In order toforce the plate of glass completely into the furnace, the shaft 52 willbe made to rotate by the manipulation of the clutch 50, and the shaft 55thereby made to rotate and cause the lazy-tong frame to be distended, aswill be readily understood, thus forcing the plate of glass completelywithin the furnace.

The apparatus is nowr ready for a repetition of the above describedoperations for rolling and pressing a plate ofglass and the insertion ofthe same into the annealing furnace.

While my improvements may appear at first glance to be more or lesscomplicated, they are in fact, very simple, and by their use,a glassplate having great density, smoothness and clearness can be producedwithout the necessity of successive rolling and Without the necessity ofturning the plate being operated upon.

By my improvements, the rolled and pressed glass plate will be easily,quickly and effect- IOO IIO

ually inserted into the annealing furnace" without the necessity ofhandling it.

On the Whole my improved apparatus is efficient, in every respect, inthe performance of its functions. l

Numerous slight changes might be made in the details of construction ofmy invention without departing from the spirit thereof or limiting itsscope and hence I do not Wish to limit myself tothe precise details ofconstruction herein set forth, but,

Having fully described my invention, what I claim as new, and desire tosecu re by Letters Patent, is-

1. The herein described method of making a plate glass consisting indepositing plastic glass onto a table. and successively rolling andpressing the glass without removing it from said table, substantially asset forth.

2. The herein described method of producing plate glass consisting infirst depositing the plastic glass in the form of a layer or plate on atable, passing a roller over such layer or plate, and then subjecting itto pressure Without removing it from the table, subst-antially as setforth.

3. The herein described method of producing plate glass consistinginfirst spreading a layer or plate of plastic glass ou a table, followingup the deposit of plastic or molten glass with a roller and thensubjecting the entire surfaces of the plate to pressure, substantiallyas set forth.

It. In a machine for producing plate glass, the combination With a tableadapted to receive a deposit of molten or plastic glass, of a travelingframe carrying a roller and a movable table, means for moving saidcarriage, operating the roller and moving the table, substantially asset forth.

5. In a machine for producing plate glass, the combination with meansfor pressing the glass, of an ejector for forcing the glass plate fromthe apparatus into an annealing furnace, substantially as setforth.

6.. In an apparatus for the manufacture of glass plate, the combinationwith a frame, of a table adapted to receive the molten glass, andcushioned brackets carried by said frame adapted to automaticallycompensate for the expansion of said table, substantially as set forth.

7. In an apparatus for the manufacture of plate glass, the combinationwith a frame, of a table adapted to receive the molten glass, andbrackets carried bysaid frame and adapted to bear, with a yieldingpressure, against the edges of said table, substantially as set forth,

S. In an apparatus for the manufacture of `.plate glass, the combinationwith a frame, of

to enter the same, and springs on said pins between the brackets andtable, substantially as set forth.

9. In an apparatus for the manufacture of plate glass, a table comprising a series of bars, bars movably connected to said bars at rightangles thereto, and face plates movably connected to said bars at rightangles thereto, substantially as set forth.

l0. In an apparatus for manufacturing plate glass, a table comprisingaseries of bars, dove-tailed bars mov-ably connected to said bars atright angles thereto, said bars having dove-tailed projections, and faceplates having dove-tailed recesses for the reception of said dove-tailedprojections, substantially as set forth.

11. In an apparatus for the manufacture of plate glass, the combinationwith a frame and a table, of brackets carried by said frame and adaptedto bea-r against the edges of the table with a yielding pressure, saidbrackets having depending portions disposed between-the frame and tableand horizontal portions adapted to rest on the top of said frame,substantially as set forth.

12. In an apparatus for the manufacture of plate glass, the combinationwith a frame, and hydraulic jacks located thereon, of a table for thereception of molten glass, mounted on the plungers of said hydraulicjacks, substantially as set forth.

13. In a machine for the manufacture of plate glass, the combinationwith a frame and means for pressing glass, of a carriage on said frame,and means for actuating said carriage whereby to eject the plate ofglass from the apparatus into an annealing oven, substantially as setforth.

llt. In a machine for the manufacture of plate glass, the combinationwith a frame and means for pressing glass, of a carriage on said frame,means for actuating said carriage whereby to eject the glass from theapparatus, and a table at one end of the apparatus over which the glassplate is ejected, substantially as set forth.

I5. In a machine for the manufacture of plate glass, the combinationWith a frame, a table thereon over which the glass passes as it isejected from the apparatus and means for pressing the glass, of amovable ejector mounted on the frame and means for actuating same,substantially as set forth.

16. In a machine for the manufacture of plate glass, the combinationwith a frame and means for pressing glass, of a carriage carried by saidframe, means for moving said carriage to force the glass plate forward,and devices carried by said carriage adapted to positively force theplate of glass beyond the e'nd ofthe machine and into an annealingfurnace, substantially as set forth.

17. In a machine for the manufacture of plate glass, the combinationwith a frame and means for pressing glass, of a carriage mounted on saidframe, a lazy-tong frame carried by IOO IIO

said carriage and means for distending said y 19. Ina machine for themanufacture of.

plate glass, the combination with a frame and a carriage mountedthereon, of a threaded shaft mounted on said carriage, a lazy-tong framemounted on said threaded shaft and adapted to eject a plate of glassfrom the machine, a gear carried by said threaded shaft, a shaft havinga gear at one end adapted to mesh with the gear on the threaded shaftand a gear onV the other end, a shaft mounted in the frame, means fordriving said shaft, gears mounted on said shaft and adapted to mesh withsaid last-mentioned gear, and a clutch on the shaft mounted in theframe, between the gears on said shaft, substantially as set forth.

20. In an apparatus for the manufacture of plate glass, the combinationwith a frame, of a carriage mounted thereon, a threaded shaft mounted onsaid carriage, means for rotating said threaded shaft, nuts mounted onsaid threaded shaft and having arms projecting therefrom, a lazy-tongframe connect-ed to said nuts, and a Vcam adapted to engage the armsprojecting from said nuts whereby to raise and lower said lazy-tongframe, substan tially as set forth.

2l. In an apparatus for the manufacture of plate glass, the combinationwith a frame, of a carriage mounted thereon and adapted to have asliding movement, vertical shafts carried by said carriage, gears onsaid shafts at points between their ends, rack bars on the frame withwhich said gears mesh, a horizontal shaft, means for driving the same,gears on said horizontal shaft, a clutch between said gears, gear Wheelson the lower ends of the vertical shafts adapted to mesh with the gearson the horizontal shaft, and a shaft having gears at its ends adapted tomesh with gears at the upper ends of said vertical shafts, substantiallyas set forth.

22. In an apparatus for the manufacture of plate glass, the combinationwith a frame and a table mounted therein,of a carriage mounted on saidframe, mechanism carried by said carriage for rolling the glass on saidtable, an ejecting mechanism adapted to slide on said frame, a hookcarried by said carriage and adapted to engage a pin on said ejectingmechanism, means for moving said carriage and ejecting mechanism, and apin adapted to release said hook from the ejecting mechanism,substantially as set forth.

23. In an apparatus for the manufacture of plate glass, the combinationwith a frame and a table mounted th erein,of a carriage mounted on saidframe, a roller mounted in said carriageV and adapted to pass over theglass on said table, and means for raising said roller off the glass atthe forward end of its movement, substantially as set forth.

2st. In an apparatus for the manufacture of plateV glass, thecombination with a frame and a table carried thereby, of a carriage,mounted on said frame, a roller mounted in said carriage, means forelevating the roller at the forward end of its movement, and meansV forautomatically retaining said roller elevated until it reaches its normalposition, substantially as set forth.

25. In an apparatus for the manufacture of plate glass, the combinationwith a frame and a tablecarried thereby, of a carriage mounted on saidframe, a roller mounted in said carriage, means for elevating saidroller at the forward end of its movement, means for automaticallyretaining said roller elevated until it reaches its normal position, andmeans for automatically releasing said roller when it reaches its normalposition, substantially as set forth.

26. In an apparatus for the manufacture of plate glass, the combinationwith a frame and atable carried thereby, of a carriage mounted on saidframe, a roller mounted in said carriage and adapted to pass over glasson said table, a beveled block pivoted at one end to said frame in thepath of saidroller, a bar pivoted to the free end of said block, a leverpivoted at a point between its ends and pivoted at oneV end to said bar,and a roller at the free end of said'pivoted lever in the path of theguide of said carriage, substantially as Set forth.

27. In an apparatus for the manufacture of plate glass, the combinationwith a frame and a table carried thereby, of a carriage mounted on saidframe, a roller mounted in said carriage and adapted to pass over glasson said table, means for raising said roller at the forward end of itsmovement, sliding bars adapted to project under the journals of saidroller to retain it elevated, springs for projecting said bars, pivotedlevers connected to said bars, and pins or stops on the frame adapted tobe engaged by said levers when the carriage reaches its normal orstarting position, for withdrawing said bars to release the roller,substantially as set forth.

28. In an apparatus for the manufacture of plate glass, the combinationwith a frame and a table carried thereby, of a carriage mounted on saidframe, a table carried by said carriage and adapted to be disposed overthe table in the main frame when said carriage moves forward, and meansfor moving the table carried by the carriage in a vertical direction,substantially as set forth.

29. In an apparatus for the lnanufacture of plate glass, the combinationWith a main frame and a table mounted therein, of a car- IIO riagemounted on said main frame, a table on said carriage and adapted to bedisposed over the table when the carriage reaches the forward end of itsmovement, screws passing through said table and into the carriage, gearwheels carried by said screws, a shaft mou nted on the carriage, gearwheels carried by said shaft and adapted to mesh with the gear wheels onthe screws, and means for driving said shaft, substantially as setforth.

30. In an apparatus for the manufacture of plate glass, the combinationwith a main frame and table mounted therein, of a car riage mounted onsaid main frame, a table carried by said carriage and adapted to bedisposed over the table in the main frame when the carriage reaches theforward end of its throw, screws passing through the table in thecarriage and into said carriage, gears carried by said screws, a shaftmounted in the carriage, gears carried by said shaft and adapted to meshAwith the gears on the screws, a gear at the end of said shaft, a gearcarried by the carriage and havingan opening therein, a gear mountedbetween the last-mentioned gear and the gear on the end of said shaft, ashort shaft carried by the main frame and adapted to enter the pinionhaving an opening therein when the carriage moves forward, a gearcarried by said short shaft, a shaft mounted at right angles to saidshaft andV having a gear loosely mounted thereon and adapted to meshwith the gear on the short shaft, and a clutch for locking said loosegear to its shaft, substantially as set forth.

3l. In a machine for the manufacture of plate glass, the combinationwith a frame, of hydraulic cylinders mounted therein, plungers in saidcylinders, a table mounted on said plungers and adapted to receive glassthereon, a table adapted to be disposed over the table in the frame,pipes connected with said cylinders, a pump with which said pipescommunicate, a motor, and gearing connecting said motor with the pump,substantially as set forth.

In an apparatus for the manufacture of glass, the combination with aframe, of hydraulic jacks mounted therein, atable moun ted on saidhydraulic jacks and adapted to receive glass, a pump, pipes connectingsaid hydraulic jacks and pump, a gear connected with the plunger of saidpump, a shaft located in proximity to said gear, and having a gearloosely mounted thereon and adapted to mesh with the first-mentionedgear, aclutch on said shaft, a gear at the other end of said shaft, amotor, a motor shaft, and a gear on the motor shaft and adapted to meshwith the last mentioned gear, substantially as set forth.

In an apparatus for the manufacture of plate glass, the combination witha frame, shafts or axles mounted in said frame, and wheels carried bysaid shafts or axles and adapted to run on tracks, of a motor mounted onthe frame, a pinion carried by the shaft of said motor, a shaft parallelwith one of said gear carried by said shaft at a point between.

its ends, a motor, and a gear carried by the motor shaft and adapted tomesh with said last-mentioned gear,substantially as set forth.

35. In an apparatus for the manufacture of plate glass, the combinationwith a main frame and a carriage mounted thereon and carrying mechanismfor pressing glass, of a motor, a shaft mounted in the frame, gearscarried by said shaft, rack bars on the carriage adapted to mesh withsaid gears, a gear carried by said shaft at a point between its ends, agear mounted loosely on the motor shaft and adapted to mesh with saidlastmentioned gear, a clutch on the motor shaft for locking said gearthereto, a pinion at the end of the motor shaft, a clutch ou the motorshaft for locking said pinion thereto, a lever for operating saidclutches, and gearing between said pinion and an axle of the machine fordriving the same, substantially as set forth.

36. In an apparatus for the manufacture of plate glass, the combinationwith a main frame, aud a carriage mounted thereon, of a motor mounted onthe main frame, a shaft mounted in the main frame and adapted to receivemotion from said motor, gears at the ends of said shaft, rack bars onthe carriage with Which said gears mesh, a roller carried by saidcarriage, gears at the ends of said roller, vertical shafts, piniouscarried by said vertical shafts and adapted to mesh with the gears atthe ends of the roller, gears secured on said vert-ical shafts at pointsbetween their ends, and rack bars carried by the main frame with whichsaid last-mentioned gears mesh, whereby to impart motion to said rolleras the carriage moves along, substantially as set forth.

37. In an apparatus for the manufacture of plate glass, the combinationwith a frame, a table mounted therein, a carriage mounted on the frameand a roller mounted in said carriage, of an arm projecting from saidcarriage, a screwthreaded rod passing through said arm and having acrank arm at one end, and a hopper secured to the lower end'of said rod,for distributing molten glass on said table, substantially as set forth.

3S. In an apparatus for the manufacture of plate glass, the combinationwith a frame, a table mounted therein, a carriage and a roller carriedby said carriage, of a hopper carried by the carriage, a hinged gate atthe lower end IOO IIO

table, a carriage adapted to move over said' table, and means forpressing glass, of a hopper carried by said carriage and adapted todeposit molten glass on said table, a plunger in said hopper,screw-shafts connected to said plunger and means for automaticallyrotating said screw-shafts as the carriage moves, whereby to move theplunger in the hopper, substantially as set forth.

4 0. In an apparatus for the manufacture of plate or sheet glass, thecombination with a table, a carriage adapted to move over said table,means for pressing,r glass, and operating mechanism, of a hopper carriedby said carriage, a plunger Within said hopper, screw shafts connectedto said plungenpinions on said screw shafts, a shaft having pinions tomesh with the hist-mentioned pinions, and a gear carried by saidlast-mentioned shaft and adapted to receive motion from the operatingmechanism, substantially as set forth.

In testimony whereof I have signed this specification in the presence oftwo Subscrilo ing witnesses.

NILES M. MILLER.

Titnessesz S. M. VERNON, J. WILLIAMS.

